The radius of the disk is R, and the mass of the disk is M. Using the parallel axis theorem and theequation for the moment of inertia of a disk about its central axis developed in the previous example, Eq. (8), the moment of inertia of the disk about the specified axis is Fig.
Short Circuits. Short circuits are the second most common reason for breaker tripping and are a more serious concern. Short circuits occur when the black hot wires inside your electrical service panel come in contact with either other hot wires or neutral wires.
If it is wired correctly, the rectifier is in reverse polarity, does not conduct and allows the radio to work. If you reverse the polarity of the power supply, the rectifier is now in full conduction, across the supply, causing a dead short.This shunts any power away from the radio and blows the fuse in the line, thus protecting it.f you connect the electrode holder to the positive post and the ground clamp to the negative post the curren â¦ t flows to the base metal thru the ground clamp, across the arc, thru the electrode and holder and back to the machine. This is reverse polarity.